Question 1

Which of the following best describes a chemical change?

Accepted Answer

A change in chemical composition that creates new chemical bonds and products.

Question 2

Which of the following is an example of an intensive property?

Accepted Answer

Density

Question 3

A student mixes sand and salt together. Which classification of matter does this mixture represent?

Accepted Answer

Heterogeneous mixture

Question 4

Which of the following processes is considered a reversible change?

Accepted Answer

Melting chocolate and then re-solidifying it in the freezer

Question 5

Which of the following is NOT a chemical property?

Accepted Answer

It has a yellow-orange color.

Question 6

Which of the following is classified as an extensive property?

Accepted Answer

Kilograms

Question 7

Which of the following is a physical property?

Accepted Answer

Mercury is a silvery liquid at 25$$^\	ext{o}C.$$

Question 8

Which of the following mixtures is homogeneous?

Accepted Answer

A cup of black coffee

Question 9

Which of the following is the correct formula for converting Celsius to Kelvin?

Accepted Answer

$$K = ^	ext{o}C + 273$$

Question 10

A gold bar is best classified as which of the following?

Accepted Answer

Element

Question 11

Which of the following is NOT an example of an intensive property?

Accepted Answer

Milligrams

Question 12

Which of the following changes is a physical change?

Accepted Answer

Dissolving sugar in water

Question 13

Which of the following is the correct scientific notation for 0.003020?

Accepted Answer

$$3.020 	imes 10$$^{-3}$$

Question 14

Which SI base unit is used to measure temperature?

Accepted Answer

Kelvin

Question 15

Which of the following best describes a homogeneous mixture?

Accepted Answer

A mixture with uniform composition throughout.

Question 16

Which of the following is a chemical property of hydrogen gas?

Accepted Answer

It reacts explosively with oxygen gas.

Question 17

Which of the following is an example of a compound?

Accepted Answer

Ammonia ($$NH_3)$$

Question 18

Which of the following is NOT a physical property?

Accepted Answer

An iron bar rusts.

Question 19

Which of the following is an extensive property of a nitrogen molecule?

Accepted Answer

Moles

Question 20

If the temperature in degrees Celsius is equal to the temperature in degrees Fahrenheit, what is the value of the temperature?

Accepted Answer

$$-40$$

Fundamental Concepts in Chemistry: Properties, Changes, and Measurements

Study Guide - Practice Questions